1.

A transvrs wave propagating along x-axis is represented by y(x,t) =80.. Sin (0.5 pi x-4pi t-(pi)/(4)). Where x is in metress and t is seconds. The speed of the wave is :

Answer»

`4i m//s`
`(pi)/(4)m//s`
`8m//s`
`0.5 pim//s`

Solution :`y(X,t)=8.0 sin (0.5 pi x-4pi t-(pi)/(4))`
`y(x,t)=a sin (kx-OMEGA t-varphi)`
`K=0.5 pi , omega= 4pi`
`V=(omega)/(k)=(4pi)/(0.5 pi)=8 m//s`


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